This ranking has the intention to include your top active favourite players that are not or has not been ranked in the top 20 ( potential future stars either like Raonic, Dimitrov, Berankis, Tomic or Stebe just to name some).
Players with the potential to be up there or winning ATP titles but for different reasons were unable till now to make the jump but you like them anyway(read Petzschner, Berlocq, Stakhovsky or Volandri just to name some)